Pass CDL Written Test


So you decided truck driving is the career for you; you’ve passed all the physical requirements; you’ve chosen a school and how to pay for it. Now what?

The next step in your journey to become a truck driver is to pass the written portion of the CDL test. Once you have passed the written CDL test, you earn your Commercial Learner’s Permit, or CLP. After earning their CLP, drivers are authorized to get behind the wheel and start developing the required skills needed to haul cargo on the open road.

What is the Written CDL Test?

The written portion of the CDL test consists of fifty randomly-selected questions. These test questions can cover any of the following topics:

Obtain your permit by passing the written CDL test.
  • Shifting gears
  • Basic semi-truck controls
  • Safety
  • Road regulations
  • Hazards
  • Emergency procedures
  • Communicating with fellow drivers
  • Maintaining specific speeds
  • Managing space between vehicles

The information you are tested on is covered in the CDL manual. Because regulations vary from state to state, each state has its own CDL manual. To obtain a copy for your state, click here.

Knowing this information like the back of your hand is crucial to passing the exam. Many of the multiple-choice questions are formulated specifically to make sure you’re paying close attention. Although learning all of the necessary information usually occurs over time, memorizing the majority of the CDL manual makes it easier to pass the written test(s).

What If I Don’t Pass the CDL Written Test?

To pass the exam, future truckers need to answer at least 80% of the questions correctly on each test they signed up for. If an 80% passing rate is not achieved, drivers may take the test again in three days.

The limit on being able to retake the test is six times in a 12-month period, after which, applicants may not take the test again for a year.

Should I Get My Endorsements?

The standard CDL written test does not enable you to drive every type of freight and every type of truck. There are other written exams for HAZMAT, tanker, and other vehicles. These are the endorsement tests.

We encourage drivers to take all of the endorsement exams in addition to the standard CDL written test for two reasons: endorsements make it possible to earn more money; and failing the endorsement written does not prevent drivers from earning the CLP.

Truckers that are interested in earning the HAZMAT endorsement also need to undergo a TSA background check before professionally hauling the dangerous cargo. The main CDL writing test lasts approximately 90 minutes, whereas the endorsement tests usually last about a half hour.

Take the written CDL test at the DMV.

What Should I Bring to the CDL Written Test?

Drivers that are at least 21 years of age and wish to drive internationally should bring a valid driver’s license with them. This verifies that the rookie driver is eligible to take the test in their home state.

Depending on the requirements of the state, future truckers may also need to bring their social security card, birth certificate, or passport.

Check with your local DMV. In addition, new applicants should expect to spend approximately $70 to cover the non-refundable test fee.

Can I Take the CDL Written Test Before Trucking School?

Rookie drivers may decide to study the CDL manual and get their CLP before they even begin truck driving school. This gives you the ability to concentrate all your attention at school on the skills test and behind-the-wheel training.

It is not necessary to take your CDL written test before trucking school.  If you were a star pupil in the classroom, this path might appeal to you. If not, your instructors at trucking school should help prepare you for the written portion of the CDL test.

Where Do I Take the CDL Written Test?

Interested applicants may visit or call their local Department of Motor Vehicles to set up an appointment. We recommend making an appointment to take your CDL written tests because you gain priority over walk-in applicants.

Before going to your location, make sure you’re well-rested and have studied the CDL manual back to front. 

After earning your commercial learner’s permit, you must hold their CLP for 14 days before taking the next test. That next step to becoming a truck driver is to pass the CDL road test.


About The Author
Contributor: Jessica Cottner. Expert Review: Luke Nold.

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